Improvement in chimney-blocks



UNITED STATES PATENT OFFICE.

ALFRED H. THOBP, OF NEW YORK, N. Y.

IMPROVEMENT IN CHIMNEY-BLOCKS.

Specification forming part of Letters Patent No. 211,437, dated January14, 1879; application filed July 3, 1878.

To all whom it may concern:

Be it known that I, ALFRED H. THoRP, of the city, county, and State ofNew York, have invented an Improvement in Chimney-Blocks, of which thefollowing is a specification:

This invention relates to that class of ventilating-chimneys formed ofblocks or sections placed one upon another to form the height of thechimney, and each comprising a central pipe portion connected by radialpartitions with an external shell, so that when the blocks are laid oneupon another the central pipe portions will constitute the smokefiue ofthe chimney, while the aggregated spaces between the shell and the pipeportions will constitute a ventilating-passage for the exit of warm orfoul air introduced through openings on the shell. at various pointsalong the vertical sides of the chimney.

As hitherto constructed, these blocks have had their aforesaid spacessubdivided by four radial partitions, extended one to each side orcorner of the block, so that when the blocks were laid one upon anotherthe partitions came one above another and divided the aggregate spaceinto four distinct and separate air-passages, so that when the chimneyis at one side of an apartment it is impossible to utilize the entirecrosssection of the chimney, for the reason that no openings made fromone side only of the chimney will afford access to all portions of thespaces or of the passages constituted thereby.

The object of my invention is to obviate thisdrawback; and my saidinvention consists in certain novel means whereby this is accomplished.

Figure 1 is a plan view, representing one feature of my said invention;and Fig. 2, a vertical sectional view thereof, taken in the line no a:of Fig. 1.

A and B represent two chi mney-blocks made according to my invention,the two blocks, apart from their arrangement in relation to each other,being identical in form and construetion. A is the central pipe portion,made preferably of cylindrical form, and B is the external shell, madepreferably of rectangular shape. The portion A is connected to the shellB, not by four radial partitions in the usual manner, but by two only,as shown at G, which extend diagonally to corners or near the corners a.of the shell A at opposite sides of the portion B, leaving the othercorners, 0, clear or devoid of partitions.

In constructing the chimney by placing a number of the blocks one uponanother, care is taken to place the partitions O of one sec tion in aplane at right angles to the partitions 0 of the blocks immediatelyabove and below, so that by this means the partitions do not formcontinuous walls, dividing the space between the portions A and theshell B into totally distinct passages, but afford openings at acoincident with the junctions of the blocks, so that the entire spacebetween the smoke-flue and the shell or outer walls of the completedchimney forms substantially a single passage, which may be tapped by oneor 'more openings formed in one side only of the shell or outer wall ofthe chimney.

What I claim as my invention is- 1. As an improvement in theherein-dcscribed class of chimney-blocks, a block liav in g the clearcorners c and the two diagonal partitions 0, connecting the centralportion, A, with the shell B, whereby the blocks may be laid in suchmanner as to afibrd substantially a single ventilating-passage embracingall the space between the portions A and shells B, substantially asherein set forth.

2. A chimney composed of the improved blocks A B, laid with theirpartitions O in planes at an angle with each other, substantially as andfor the purpose herein set forth.

ALFRED H. THORP.

